在生物学教学中除了要有好的教学方法外，还应有适当的教学手段，适当的教学手段可促进教学方法的研究和改进，提高教学效果。 在生物学教学中教师常采用直观的手段，使抽象的知识具体化、形象化，易被学生接受，从而加快学习速度，加深对知识的理解。 在这里笔者着重谈一下生 In addition to good teaching methods, there should be appropriate teaching methods in the teaching of biology. Appropriate teaching methods can promote the research and improvement of teaching methods and improve teaching effectiveness. In biology teaching, teachers often use intuitive means to make the abstract knowledge concrete and visualized and easily accepted by students, thus accelerating the speed of learning and deepening the understanding of knowledge. Here the author focuses on talking about students